Ohio Board of Tax Appeals Income Tax and CAT Appeal

The situation

Carlos, 47, owns Pacific Midwest Software Solutions LLC, an Ohio-based software development firm generating $8.4M in 2023 revenue. Ohio DOR audited Carlos's 2023 CAT return and issued a Final Determination assessing $22,620 in additional CAT (plus penalties/interest).

Ohio DOR's position: Carlos's company performed custom software development services for out-of-state clients ($8.4M in total revenue), but the Ohio DOR's auditor classified $8.7M of those revenues as "Ohio-sourced" under Ohio's market-sourcing rule, reasoning that the "benefit of the service" (the software being used) was received at the Ohio location where the client deployed the software on Ohio-based servers.

Carlos's position: Ohio's CAT market-sourcing rule for services should source the revenue to WHERE THE CUSTOMER IS LOCATED (the customer's state of incorporation or primary place of business), not where the customer's servers happen to be housed. Several of Carlos's biggest clients are California and New York companies that use Ohio-based data centers, these revenues should be sourced to CA/NY, not Ohio.

Carlos has 60 days from the Final Determination to file a BTA Notice of Appeal.

What Carlos needs to understand: (a) Ohio's market-sourcing rule (Ohio R.C. § 5751.033(I)) sources service receipts to where the customer "received the benefit of the service." For digital services, the Ohio DOR's administrative guidance and BTA precedent determine whether "received the benefit" means the customer's headquarters state, the customer's state of use, or the customer's server location. (b) BTA precedent on digital services sourcing is still developing. The Ohio BTA has heard several CAT market-sourcing cases for technology services post-2014, there are BTA decisions that support both the DOR's and Carlos's interpretations depending on the specific service type. (c) The BTA Notice of Appeal must be filed within 60 days. After filing, BTA proceedings allow discovery, briefing, and a hearing before a BTA hearing examiner. (d) The CAT assessment ($22,620) vs. attorney cost ($3,000-$15,000) creates a strong incentive for a self-serve approach. The BTA appeal procedure is structured, the key analysis is sourcing classification under Ohio R.C. § 5751.033 and relevant BTA precedent.

Second portrait: Rachel, 44, is a Columbus-area nurse practitioner who relocated from Hilliard, OH (Columbus City School District, 0.75% SDIT) to New Albany, OH (New Albany-Plain Local School District, 1.00% SDIT) in March 2022. Ohio DOR issued a Final Determination for 2022: $1,890 in additional school district income tax, the DOR auditor assigned Rachel to the New Albany school district for the FULL year 2022 (100% of her $210,000 income × 0.9% blended calculation), when Rachel believes she should have been a PART-YEAR resident of each district (January-March = Hilliard; April-December = New Albany).

What Rachel needs to understand: (a) Ohio SDIT is assessed on a residency basis for each school district. For part-year residents, Ohio R.C. § 5748.01 apportions SDIT based on the portion of the year the taxpayer resided in each school district. Rachel's March relocation should result in a pro-rated SDIT between the two districts. (b) The school district designation issue is purely administrative. Rachel needs to provide her new driver's license (April 2022 address change), utility transfer records, and lease/purchase closing documents showing her March 2022 move date. (c) BTA Small Claims Division handles disputes ≤ $10,000 with a simplified procedure. Rachel's $1,890 SDIT dispute qualifies. The BTA Notice of Appeal must be filed within 60 days.

Who receives this

Ohio income tax filers and business owners who received an Ohio DOR Final Determination. Primary segments: (1) Ohio-based tech and professional services companies with Ohio CAT nexus and market-sourcing disputes (H.B. 96 CAT changes created new assessment patterns in 2023-2024); (2) Ohio workers who moved between school districts mid-year and received SDIT assessments; (3) Ohio self-employed workers with income tax deduction disputes; (4) Part-year Ohio residents with income tax and SDIT allocation questions. Scale: Ohio is the 7th most populous US state (12M population); Columbus metro (2.2M) is a major tech hub; Cleveland-Akron metro (2.1M) and Cincinnati metro (2.4M) have significant manufacturing and professional services employment.

Why the agency will not advise you

Ohio DOR cannot advise taxpayers how to contest its own Final Determinations. BTA is genuinely independent ("statewide forum for resolution of disputes"). BTA Resolution Center (ohio-bta.modria.com) = case management only (NO substantive guidance). epta.polterlaw.com = property tax only. Ohio's unique SDIT (one of very few states with district-level income taxes) and CAT market-sourcing complexity create specific knowledge gaps for self-serve tools.

Key facts, with sources

• The Ohio Board of Tax Appeals (BTA) is a quasi-judicial state agency created by the Ohio legislature to hear disputes between taxpayers and Ohio's taxing authorities. The BTA describes itself as 'a statewide forum for the expeditious resolution of disputes between taxpayers and the Ohio Department of Taxation and local taxing authorities.' BTA hearing examiners are NOT employees of the Ohio Department of Taxation, the BTA is structurally independent from the Ohio DOR. When the Ohio DOR issues a Final Determination on an income tax, school district income tax, or Commercial Activity Tax assessment, the taxpayer has 60 days to file a Notice of Appeal with the Ohio BTA (Ohio R.C. § 5717.02). The Ohio BTA Resolution Center (ohio-bta.modria.com) is an online case management platform for accessing BTA case documents, submitting filings, and checking case status, it is a CASE MANAGEMENT TOOL, not a substantive analysis or defense-preparation tool. BTA decisions are appealable to the Tenth District Court of Appeals (Columbus) and the Ohio Supreme Court. Ohio taxes individual income at graduated rates (top rate 3.99% on income over $115,300 as of 2023, phased down under H.B. 96 from the prior 3.99% bracket). Ohio's flat-rate income tax environment and the additional complexity from SDIT generate a consistent flow of BTA appeals each year. Source: Ohio Board of Tax Appeals · Ohio BTA Resolution Center · How to File an Appeal — Ohio BTA
• Ohio's Commercial Activity Tax (CAT) is a gross receipts tax levied on Ohio-based and Ohio-nexus business activity. Ohio H.B. 96 (2023) significantly changed the CAT by: (1) exempting businesses with Ohio taxable gross receipts below $3 million (up from $150,000 threshold); (2) maintaining the 0.26% rate for businesses over $3M. The CAT generates disputes about: (a) Ohio nexus, whether a non-Ohio business has sufficient Ohio economic presence (over $500,000 in Ohio receipts OR physical presence triggers CAT nexus); (b) market sourcing, Ohio moved to market-sourcing apportionment for services CAT in 2014 (where the customer receives the benefit of the service = the Ohio-sourced receipt); (c) CAT exclusions, Ohio R.C. § 5751.01 excludes certain receipts from CAT (certain pass-through receipts, certain institutional sales). Ohio is also one of the very few states with a school district income tax (SDIT), approximately 200 Ohio school districts levy their own income taxes (rates 0.5%–2%) administered by the Ohio DOR and collected on Ohio income tax returns. SDIT disputes arise when taxpayers live near district borders or move between districts mid-year. epta.polterlaw.com provides Ohio PROPERTY TAX appeal tools only, it is not an income tax or CAT competitor. Ohio tax attorneys (Bricker Graydon, Vorys Sater Seymour & Pease, Squire Patton Boggs) charge $3,000–$15,000 for BTA proceedings. No self-serve Ohio income tax or CAT audit appeal tool was found. Source: Ohio Commercial Activity Tax — Ohio DOR · Ohio School District Income Tax — Ohio DOR · Ohio Commercial Activity Tax Changes — Ohio DOR H.B. 96

When to bring in a professional

Self-serve responses fit routine cases: clear facts, amounts a business can absorb, and a deadline still ahead of you. Bring in a licensed professional when the amount at stake is large relative to their fee, the facts are genuinely disputed, criminal exposure is possible, or the deadline has already passed. A short paid consultation to sanity-check your plan is often worth it even when you handle the filing yourself.

All sources for this guide

1. Ohio Board of Tax Appeals
2. Ohio BTA Resolution Center
3. How to File an Appeal — Ohio BTA
4. Ohio Commercial Activity Tax — Ohio DOR
5. Ohio School District Income Tax — Ohio DOR
6. Ohio Commercial Activity Tax Changes — Ohio DOR H.B. 96